Meanwhile, the KwaZulu-Natal legislature's portfolio committee on education condemned the incident.
Chairperson Sfiso Sonjica said they were “shocked and disgusted” by allegations of racism and manhandling of pupils “who were on a peaceful strike”.
He added: “We are disturbed very much by the video that has gone viral showing confrontation between the learners and the security personnel.
“We are more than disturbed by alleged racism in the school, and it is our view that the department must immediately investigate these allegations and act in accordance with the law.
“We have a great interest in seeing that racism in any form in our schools and society in general must be eliminated in all its forms.”
KwaZulu-Natal education MEC Kwazi Mshengu said he had assembled a team to look into “police brutality against learners of Effingham Secondary”.
On Twitter, Mshengu said: “Legal services have been directed to assist in opening criminal cases against the person who pointed a rifle at learners.”